A. the first one is the answer
Step-by-step explanation:
First make an equation representing this.
Y= total length
X= the distance from each wall
13 = 2x + 3.5
13 = 2x + 3.5
subtract 3.5 from each side
9.5 = 2x
Divide 2 from each side
X = 4.75 ft
Step-by-step explanation:
c²=24²+45²=2601
so c=51